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AWS BNi-9 vs. ASTM A387 Grade 22 Steel

AWS BNi-9 belongs to the nickel alloys classification, while ASTM A387 grade 22 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-9 and the bottom bar is ASTM A387 grade 22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
74
Tensile Strength: Ultimate (UTS), MPa 580
480 to 600

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1060
1470
Melting Onset (Solidus), °C 1060
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 60
3.8
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 9.3
1.7
Embodied Energy, MJ/kg 130
23
Embodied Water, L/kg 260
58

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 19
17 to 21
Strength to Weight: Bending, points 18
17 to 20
Thermal Shock Resistance, points 19
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 3.3 to 4.0
0
Carbon (C), % 0 to 0.060
0.050 to 0.15
Chromium (Cr), % 13.5 to 16.5
2.0 to 2.5
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 1.5
95.1 to 96.8
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 77.1 to 83.3
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.025
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0